To prevent the generation of clinker with a high combustion efficiency and reduce the generation of a nitrogen oxide as well.
There are provided a cylinder-shaped combustion compartment main body 1 which forms a flame emission outlet on one end, a fuel supply means 6 which supplies a primary air and a particle-shaped fuel turningly, a secondary air supply means 8 which inhibits a turning current with the primary air and the particle-shaped fuel, a throttling member 10 which throttles the cross section area of the flame emission outlet 2, an auxiliary fuel supply means 3 which supplies an auxiliary fuel in the axial core direction of the combustion compartment main body 1 and a three dimensional air supply means 3 which supplies a three dimensional air in the direction identical to that of the auxiliary fuel. The total supply amount of the secondary air is set to be smaller than a theoretical amount of air required to burn the particle-shaped fuel while the total amount of the primary, secondary and three dimensional air is set to be larger than that of the theoretical air which burns the particle- shaped fuel and the auxiliary fuel. The fuel supply means 6 supplies the exhaust gas into the combustion compartment main body 1 in addition to the primary air and the particle-shaped fuel.
EGASHIRA KATSUHIRO
YAGI AKIFUMI
TATEIWA JINGO
FUJITA EIJI
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